This is the best hardware/config comparison I've come across: https://docs.google.com/spreadsheets/d/1MI-ic0Os25hgGUImW54sUIjZY_pUNQNa_W8Se5pRGBs/edit?pli=1#gid=0
It's for monero specifically, but relevant to all CryptoNight coins. Most modern CPUs get 80-280 H/s depending on cores, AES-NI compatibility, and OS. In my case with an i7-3770 (same machine in both examples), I get 170 H/s on Windows 7 and 265 H/s on Ubuntu 14.04.